Add config attribute to data and refactor data naming (#81)

* feature: add config to MinerData.  Remove related attributes.

* feature: rename ideal and nominal to expected to make data naming consistent across files.

* refactor: run isort on all files.

* docs: update docstrings.

pyasic/miners/antminer/__init__.py

@@ -17,7 +17,7 @@
 from .bmminer import *
 from .bosminer import *
 from .cgminer import *
+from .epic import *
 from .hiveon import *
 from .luxos import *
 from .vnish import *
-from .epic import *